Luminescent optical detection of volatile electron deficient compounds by conjugated polymer nanofibers

Aidan Wade, Pierre Lovera, Deirdre M O'Carroll, Hugh Doyle, Gareth Redmond

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

Optical detection of volatile electron deficient analytes via fluorescence quenching is demonstrated using ca. 200 nm diameter template-synthesized polyfluorene nanofibers as nanoscale detection elements. Observed trends in analyte quenching effectiveness suggest that, in addition to energetic factors, analyte vapor pressure and polymer/analyte solubility play an important role in the emission quenching process. Individual nanofibers successfully act as luminescent reporters of volatile nitroaromatics at sub-parts per million levels. Geometric factors, relating to the nanocylindrical geometry of the fibers and to low nanofiber substrate coverage, providing a less crowded environment around fibers, appear to play a role in providing access by electron deficient quencher molecules to the excited states within the fibers, thereby facilitating the pronounced fluorescence quenching response.

Original languageEnglish
Pages (from-to)4421-4428
Number of pages8
JournalAnalytical Chemistry
Volume87
Issue number8
DOIs
Publication statusPublished - Apr 21 2015

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Conjugated polymers
Nanofibers
Intermetallics
Quenching
Fibers
Fluorescence
Electrons
Vapor pressure
Excited states
Polymers
Solubility
Molecules
Geometry
Substrates

ASJC Scopus subject areas

  • Analytical Chemistry

Cite this

Luminescent optical detection of volatile electron deficient compounds by conjugated polymer nanofibers. / Wade, Aidan; Lovera, Pierre; O'Carroll, Deirdre M; Doyle, Hugh; Redmond, Gareth.

In: Analytical Chemistry, Vol. 87, No. 8, 21.04.2015, p. 4421-4428.

Research output: Contribution to journalArticle

Wade, Aidan ; Lovera, Pierre ; O'Carroll, Deirdre M ; Doyle, Hugh ; Redmond, Gareth. / Luminescent optical detection of volatile electron deficient compounds by conjugated polymer nanofibers. In: Analytical Chemistry. 2015 ; Vol. 87, No. 8. pp. 4421-4428.
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